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statuscvo [17]
3 years ago
11

Which expression is equivalent to |a|<.5

Mathematics
2 answers:
ivolga24 [154]3 years ago
8 0

Answer:

lal lesthan or equal to 5

Step-by-step explanation:


sergij07 [2.7K]3 years ago
5 0

Answer:

-.5 < a < .5 is equivalent to |a| < .5.

Step-by-step explanation:

Given expression is:

|a| < .5

As we know that

If |x| < b then -b < x < b.

In question statement, we observe that

x = a  and b = .5

If |a| < .5 then -.5 < a < .5

-.5 < a < .5 is equivalent to |a| < .5.

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The manager went over the sales of mobile phones at the store and found that the mean sale was 45, with a standard deviation of
d1i1m1o1n [39]

The z-score of the sale of mobile phones on that day is 1.75

Step-by-step explanation:

The formula of z-score is z = (x - μ)/σ, where:

  • x is the score
  • μ is the mean
  • σ is the standard deviation

∵ The mean sale was 45

∴ μ = 45

∵ The standard deviation was 4

∴ σ = 4

∵ 52 mobile phones were sold on a particular day

∴ x = 52

To find z-score of the sale of mobile phones on that day substitute the values of x, μ, and σ in the formula of z-score

∵ z=\frac{52-45}{4}

∴ z=\frac{7}{4}

∴ z = 1.75

The z-score of the sale of mobile phones on that day is 1.75

Learn more:

You can learn more about z-score in brainly.com/question/7207785

#LearnwithBrainly

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3 years ago
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Answer: B

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You purchase a cell phone for $125. the value of the cell phone decreases by about 20% annually. write a function at models the
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5 0
3 years ago
Can someone please help me?
Luda [366]

Answer:

(x-1)^5 (x+1)

Step-by-step explanation:

2 (x-1)^5 + (x-1)^6

Factor out (x-1)^5

2 (x-1)^5 + (x-1)^5 (x-1)

(x-1)^5( 2 + x-1)

Combine like terms

(x-1)^5 (x+1)

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2 years ago
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